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機(jī)械設(shè)計(jì)實(shí)例練習(xí)之二:滾彎機(jī) |
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點(diǎn)評
是的,我姓彭。
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點(diǎn)評
老驥當(dāng)然,伏櫪尚未。志在千里而無站立之力,凄慘可狀,故而害怕。
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